swift



(No Model.)

A. W. SWIFT, LUBRIGATOR. No. 284,340. Patented Septr4, 1883.}

WITNESSES- @WMM V N. PETERS Phalo-Lflhngnphor. Washington 040,

UNITED STATES PATENT OFFICE. V 1

ALLEN W S WIFT, OF ELMIRA, NEW YORK.

LUBRICATO R.

SPECIFICATION forming part of Letters Patent No. 284,340, dated September 'Application filed January 27, 1883. (No model.)

To all whom it may concern Be it known that I, ALLEN WV. SWIFT, of Elmira, in the county of Ghemung, in the State of NewYoula, have invented new and useful Improvements in Lubricators, of which the fol1owing, taken inconnection withthe accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of lubricators which are usually designated displacement lubricators, and in which the lubricant is automatically discharged from the cup by the pressure of water obtained from conden sation of steam and admitted into the cup; and it has, more particularly, reference to the style of lubricator illustrated in my patent of September 26, 1882. I

In the operation of the said lubricator, I

have found that owing tothe peculiar arrange ment of the oil'inlet, oil-outlet,water-"inlet and observing-glass with the cavity of the arm I illustration of the same,

which carries the lubricant-cup inasuspended position and forms an extension of said cup, the air which entersthrough the oil-inlet, while filling the cup and becomes confined therein, forms an elastic cushion which conduces to the pulsations and irregularities in the action of. the lubricator as observed through the obser vation-glass thereof.

To overcome this defect, my invention consists in providing an air-vent in the upper: portion, and preferablynear the-glass end of the cavity of thearm which supports the cup,

The invention also consists in the applica-- tion to the water-inlet to the lubricant-cup of an adjustable nozzle adapted to be set a greater or less distance from the observationport or transparent portion of the cup, according to the quality of oil used as lubricant, thus obtaining invariably the best effect of the socalled sight-feed.

The invention is fully illustrated in the annexed drawings, wherein Figure 1 is a side view of a lubricator provided with my improvement, the portion containing said improvements being shown in section for a proper and Fig. 2 is a transverse section taken immediately in front of the air-vent.

Like letters of reference denote like parts. F denotes the lubricant-cup, secured in a suspended position to the horizontal supporting-arm A, by which it is connected to, the steam-pipe S, said supporting-arm being formed with a longitudinal cavity, 0, which communicates with the interior of the cup F, and is closed at the free end of the arm by a glass plate, 01. The opposite end of the said cavity communicates with the steam-pipe S by a channel, a, extended through the attached end of the arm A. Above the armAis a steam-condensing chamber, E, which receives steam through a tube, K, extended from the top of the condenser E and tappingthesteampipe S. A drip-pipe, I, extended from the base of the condenser. and terminating in a the water of condensation to escape into the trap Z; and thence into the cup, the discharge end of the trap being arranged facing the glass d, and provided with a polished face, so as to render this influx of water more readily observable through the glass d, the water entering the cup in drops, which, in their passage through the oil in front of the polished face, present-the appearance of bright pearls e1nerging from the trap b, and the speed of their ingress indicates a corresponding speed of the egress of the lubricant from the cup, the issuing lubricant passing through the channel a into the steam-pipe S, and thence to the parts to be lubricated. l

In order to render the described sight-feed operative with dark oil as effectively as with light oil, I make said sight-feed adjustable by applying to the discharge end of the trap 12 a nozzle, a, fitted to slide telescopically in said discharge end, and provided at its outer end with a polished perforated plate, through which the inflowing water passes. By pushing the nozzle more or less into the end of the trap the polished plate of said nozzle is brought a greater or less distance from the transparent plate (I. When using dark oil, the nozzle can be drawn out to bring the polished plate thereof in closer proximity to the glass d, thus rendering the inflowing water more conspicuous through said glass.

Some irregularities have been experienced in the operation of the described automatic lubricator, incident to air entering the cup when replenishing the same with lubricant. The air confined in said cup forms an elastic cushion,which yields to a certain extent to the water-trap, b, situated in the cavity 0, allows w pressure exerted on the contents of the cup by its communications with the steam in the steampipe S. The action of said air-cushion contributes to a great extent to the pulsations and irregularities of the feed, which is sometimes noticed through the glass or observation-port d. To overcome this defect I provide the upper part of the cavity 0, which constitutes an eX- tension of the cup F, with a vent, a, which may be in the form of a screw-threaded channel tapping the cavity 0, and provided with a correspondingly screw-threaded plug or valvestem, 0, by the removal or mere slacking of which latter the confined air is allowed to escape from the interior of the cup.

Having described my invention,w11at I cl aim as new, and desire to secure by Letters Patent, 1S"

1. In combination with the lubricant-cup F, condenser E, supporting-arm A, provided with the cavity 0, eduction-channel a, trap I), and glass (1, the valve 1;, applied to the upper part of the cavity 0, substantially in the manner described and shown, for the purpose set forth.

2. In combination with a lubricant-cup provided with a transparent section and a water inlet near said section, a nozzle applied adjustably to said inlet, and adapted to be set at a greater or less distance from the transparent portion of the cup, substantially as and for the purpose specified.

In testimony wh ereof I have hereunto signed my name and affixed my seal, in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 4th day of January, 1883.

ALLEN W. SWIFT. [L. s.]

Witnesses:

F. H. GIBBs, WM. 0. RAYMOND. 

